Transmission forced lubrication device, upper cover tool and transmission

Abstract

The utility model relates to the technical field of transmission lubrication, in particular to a transmission forced lubrication device, an upper cover tool and a transmission.The transmission forced lubrication device comprises an oil supply device, an oil dripping device, an oil guide pipe and an oil quantity control valve, the oil guide pipe penetrates through a shell of the transmission, and the two ends of the oil guide pipe are communicated with the oil supply device and the oil dripping device respectively; the oil quantity control valve is arranged on the oil guide pipe, the oil supply device is located outside a shell of the transmission, the oil dripping device is installed in the transmission, and the oil dripping direction faces the portion needing to be lubricated. The speed changer forced lubrication device overcomes the problem of ablation risk caused by the fact that the speed changer cannot be lubricated in a splashing mode in an existing whole vehicle neutral gear sliding test, serves as an external lubrication device, and can carry out forced lubrication on parts which are in urgent need of lubrication and cannot be lubricated in the speed changer in the test process. It is ensured that the transmission is not ablated in the test process, normal propulsion of the test is ensured, and the test success rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission lubrication, and more specifically, to a transmission forced lubrication device, an upper cover tooling and a transmission. Background Art

[0002] At present, the main lubrication method of the transmission is gear splash lubrication: that is, when the gears in the transmission rotate at high speed, the lubricating oil inside the transmission is brought up and splashed onto the gear surface, thereby playing a role in lubrication and cooling.

[0003] When heavy trucks and other vehicles are subjected to neutral gear coasting tests on a hub test bench (chassis dynamometer), the hub test bench is usually required to drive the rear axle of the vehicle to increase and decrease the speed of the vehicle. This process needs to last for at least 30 minutes, during which a fitting test of the original resistance curve of the vehicle is performed. Because the hub is used to reverse the transmission for a long time, the transmission is in neutral gear. When the vehicle is tested in neutral gear, the two shafts and synchronizer in the transmission do not move. Therefore, the rotation of the transmission gears cannot be used to drive the internal lubricating oil for splash lubrication. During this process, there is a great risk of ablation of the two shafts of the transmission.

[0004] After the transmission shaft is burned, it will become stuck or even stuck. At this time, the tester needs to find out in time and stop the test immediately. Otherwise, if the hub continues to drive the middle and rear axles and drag the vehicle backwards, it will cause safety hazards and cause greater transmission system failures, such as broken gears and drive shafts inside the transmission. Similar failures have been encountered many times in actual work, resulting in permanent damage to the transmission shaft. The existing test tooling does not have a special external transmission forced lubrication device. Once the transmission assembly has a second shaft burned during the test, the gear shifting operation will not be able to be performed and the test will be interrupted. It will take a lot of time to repair or replace the transmission assembly to restart the experiment, which is not conducive to the vehicle's neutral coasting test. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem of the risk of ablation caused by the inability of the transmission to splash lubricate during the neutral gear coasting test of the vehicle, and to provide a transmission forced lubrication device, an upper cover tooling and a transmission. The transmission forced lubrication device is an external lubrication device. During the test, it can force lubricate the parts of the transmission that cannot splash lubricate but are in urgent need of lubrication, ensuring that the transmission does not ablate during the test, ensuring the normal progress of the test, and improving the success rate of the test.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A transmission forced lubrication device comprises an oil supply device, an oil dripper, an oil guide pipe and an oil quantity control valve. The oil guide pipe runs through a transmission housing and has two ends respectively connected to the oil supply device and the oil dripper. The oil quantity control valve is arranged on the oil guide pipe. The oil supply device is located outside the transmission housing. The oil dripper is installed inside the transmission and the oil dripping direction is toward a part to be lubricated.

[0008] It should be noted that based on the basic structure of the transmission, there is a certain space inside the transmission housing for installing an oil dripper; there is an air pressure balance hole on the transmission housing itself for balancing the internal and external air pressures, so the oil supply device can supply oil to the interior of the transmission housing; the locations inside the transmission that need lubrication include but are not limited to shift forks, synchronizers, gears and other parts.

[0009] It should also be noted that the utility model is applied to the forced lubrication of the transmission when the vehicle is undergoing a neutral gear coasting test. Since the two shafts and synchronizer in the transmission are not moving when the transmission is undergoing a vehicle test on the vehicle body, it is impossible to utilize the rotation of the transmission gears to drive the internal lubricating oil of the transmission for splash lubrication. The utility model oil dripper is installed in the internal space of the transmission, and the oil supply device supplies oil to the oil dripper through the oil guide pipe. The oil dripper performs fixed-point oil dripping lubrication on the shift fork, two-shaft gears and synchronizer in the transmission. Since the test time is relatively long, the amount of lubricating oil only needs to achieve the lubrication effect. Therefore, the oil supply of the oil supply device can be controlled by the oil quantity control valve to ensure the oil dripping frequency and oil quantity of the oil dripper, thereby ensuring forced lubrication during the test without increasing the amount of lubricating oil inside the transmission too much. The utility model can ensure that when the vehicle is conducting a neutral gear coasting test, when the transmission cannot be splash lubricated, accurate forced lubrication is performed on the positions in the transmission that require lubrication, thereby achieving a forced lubrication effect under any test conditions and any test cycle conditions. The device can achieve a lubrication effect with adjustable oil volume and high-precision fixed-point lubrication, completely eliminating the risk of second-axis ablation of the transmission during the neutral gear coasting test of the whole vehicle.

[0010] Furthermore, the oil dripper includes a dispersion pipe connected to the oil guide pipe, and a plurality of drippers respectively connected in parallel to the dispersion pipe.

[0011] Furthermore, the layout positions of the plurality of drippers match the parts inside the transmission that need lubrication.

[0012] It should be noted that the lubricating oil is distributed through the dispersion pipe so that the dripper can discharge oil evenly. The dripper can control its oil discharge rate and oil droplet size to a certain extent through caliber control. The oil dripping position of the dripper is toward the part that needs lubrication inside the transmission. The size and setting spacing of the dripper can be increased, decreased and set according to different transmission types, so as to achieve a multi-position fixed-point lubrication effect.

[0013] As a preferred solution, the oil supply device includes an oil inlet pipe and an oil pump, one end of the oil inlet pipe passes through the transmission housing and is connected to the lubricating oil layer inside the transmission, the other end of the oil inlet pipe is connected to the input end of the oil pump, and the output end of the oil pump is connected to the oil guide pipe.

[0014] Furthermore, the oil pump is an electronic oil circulation pump with a built-in drive motor, or an oil circulation pump driven by an external drive motor.

[0015] Furthermore, a first filter screen is provided in the oil inlet pipe.

[0016] The design principle of the preferred scheme of the oil supply device is: using the lubricating oil in the internal cavity of the transmission to force lubrication of the parts that need lubrication when splash lubrication is not possible during the transmission test, and circulating the lubricating oil of the transmission itself, there is no need to worry about the problem of excessive amount of lubricating oil inside the transmission, and there is no need to discharge excess lubricating oil after the test, eliminating the risk of transmission ablation; at the same time, the first filter filters the lubricating oil to prevent wear debris inside the transmission from following the lubricating oil into the oil pump and causing damage to the oil pump, while also improving the lubrication effect.

[0017] As another preferred solution, the oil supply device is an oil pot, and the oil pot is connected to the oil guide pipe.

[0018] Furthermore, a second filter screen is provided at the connection point between the oil pot and the oil guide pipe.

[0019] The design principle of the preferred scheme of the oil supply device is: through the external lubricating oil oil pot, the oil dropper accurately drips to the part of the transmission that needs lubrication. Although the oil pot has a simple structure, it has the lowest cost. However, during a single test cycle of the device, it is necessary to add an appropriate amount of lubricating oil to the oil pot, and it is also necessary to observe the changing liquid level of the lubricating oil in the transmission to avoid excessive transmission oil. After a single test cycle is completed, it is necessary to clean up the excess gear oil in the transmission, such as releasing some of the excess oil through the drain plug at the bottom of the transmission before the next test cycle can be carried out.

[0020] The utility model also provides a transmission forced lubrication upper cover tooling, including a transmission assembly upper cover, and also includes the above transmission forced lubrication device, the transmission assembly upper cover is provided with an oil outlet hole and an oil inlet hole, the oil inlet pipe passes through the oil outlet hole, and the oil guide pipe passes through the oil inlet hole, so the oil inlet pipe and the oil guide pipe are sealed and connected to the transmission assembly upper cover.

[0021] Although there are many types of transmissions, the same type of transmission assembly upper cover can be universal. Therefore, the utility model integrates the transmission forced lubrication device with the transmission assembly upper cover. When the same type of vehicle is subjected to a vehicle neutral gear coasting test, the transmission assembly upper cover can be directly replaced. There is no need to drill holes and install the transmission forced lubrication device for each transmission assembly. This can save work time and improve test efficiency.

[0022] The utility model also provides a transmission, comprising the above transmission forced lubrication upper cover tooling.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] The utility model is applied to the forced lubrication of the transmission when the vehicle is conducting a neutral gear coasting test of the whole vehicle, which can ensure that when the vehicle is tested, when the transmission cannot be splash lubricated, the parts that need lubrication are accurately forced to lubricate, thereby achieving the forced lubrication effect under any test conditions and any test cycle conditions. The device can achieve a lubrication effect with adjustable oil volume and high-precision fixed-point lubrication, and completely eliminate the risk of transmission ablation during the neutral gear coasting test of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0026] Figure 2 This is a structural schematic diagram of the oil dripper in the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0028] Figure 4 This is a schematic diagram of the structure of Example 3 of the present utility model.

[0029] The illustrations are as follows:

[0030] 1- oil supply device, 11- oil inlet pipe, 12- oil pump, 13- oil pot, 2- oil dripper, 21- dispersion pipe, 22- dripper, 3- oil guide pipe, 4- oil quantity control valve, 100- transmission, 101- transmission assembly upper cover. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Example 1

[0034] like Figure 1 As shown, a transmission forced lubrication device includes an oil supply device 1, an oil dripper 2, an oil guide pipe 3 and an oil quantity control valve 4. The oil guide pipe 3 runs through the housing of the transmission 100 and the two ends are respectively connected to the oil supply device 1 and the oil dripper 2. The oil quantity control valve 4 is arranged on the oil guide pipe 3. The oil supply device 1 is located outside the housing of the transmission 100. The oil dripper 2 is installed inside the transmission 100 and the oil dripping direction is toward the part to be lubricated.

[0035] It should be noted that, based on the basic structure of the transmission 100, there is a certain space inside the housing of the transmission 100 for installing the oil dripper 2; there is an air pressure balance hole on the housing of the transmission 100 itself for balancing the internal and external air pressures, so the oil supply device 1 can supply oil to the interior of the housing of the transmission 100; the parts inside the transmission 100 that need lubrication include but are not limited to shift forks, synchronizers, gears and other parts.

[0036] The present embodiment is applied to the forced lubrication of the transmission 100 when the vehicle is conducting a neutral gear coasting test. Since the two shafts and synchronizer in the transmission 100 are not in motion when the transmission 100 is conducting a vehicle test on the vehicle body, it is impossible to utilize the rotation of the transmission 100 gears to drive the internal lubricating oil of the transmission 100 for splash lubrication. The oil dripper 2 of the present embodiment is installed in the internal cavity of the transmission 100, and the oil supply device 1 supplies oil to the oil dripper 2 through the oil guide pipe 3. The oil dripper 2 performs fixed-point oil dripping lubrication on the shift fork, two-shaft gears and synchronizer in the transmission 100. Since the test time is long, the amount of lubricating oil only needs to achieve the lubrication effect. Therefore, the oil supply of the oil supply device 1 can be controlled by the oil quantity control valve 4 to ensure the oil dripping frequency and oil quantity of the oil dripper 2, thereby ensuring forced lubrication during the test without increasing the amount of lubricating oil in the transmission 100 too much.

[0037] like Figure 2 As shown, the oil dripper 2 includes a dispersion pipe 21 connected to the oil guide pipe 3, and a plurality of drippers 22 respectively connected in parallel to the dispersion pipe 21.

[0038] In this embodiment, the layout positions of the plurality of drippers 22 match the parts inside the transmission 100 that need lubrication.

[0039] It should be noted that the lubricating oil is distributed through the dispersion tube 21 so that the dripper 22 can discharge oil evenly. The dripper 22 can control its oil discharge rate and the size of oil droplets to a certain extent by controlling the caliber. The oil dripping position of the dripper 22 is toward the part that needs lubrication inside the transmission 100. The size and setting spacing of the dripper 22 can be increased, decreased and set according to different types of transmissions 100, so as to achieve a multi-position fixed-point lubrication effect.

[0040] like Figure 1 As shown, the oil supply device 1 includes an oil inlet pipe 11 and an oil pump 12. One end of the oil inlet pipe 11 passes through the housing of the transmission 100 and is connected to the lubricating oil layer inside the transmission 100. The other end of the oil inlet pipe 11 is connected to the input end of the oil pump 12. The output end of the oil pump 12 is connected to the oil guide pipe 3.

[0041] In this embodiment, the oil pump 12 is an electronic oil circulation pump with a built-in drive motor, or an oil circulation pump driven by an external drive motor.

[0042] In this embodiment, a first filter screen is further provided in the oil inlet pipe 11 .

[0043] The design principle of the oil supply device 1 is: using the lubricating oil in the internal cavity of the transmission 100 to force lubricate the parts that need lubrication when splash lubrication is not possible during the test of the transmission 100, and circulating the lubricating oil of the transmission 100 itself. There is no need to worry about the problem of excessive lubricating oil in the transmission 100, and there is no need to discharge excess lubricating oil after the test, eliminating the risk of ablation of the transmission 100; at the same time, the first filter screen filters the lubricating oil to prevent wear debris inside the transmission 100 from following the lubricating oil into the oil pump 12 and causing damage to the oil pump 12, while also improving the lubrication effect.

[0044] The advantage of this embodiment is that this embodiment can ensure that when the vehicle is conducting a neutral gear coasting test on the hub test bench, when the transmission 100 cannot be splash lubricated, precise forced lubrication is performed on the positions requiring lubrication in the transmission 100, thereby achieving a forced lubrication effect under any test conditions and any test cycle conditions. The device can achieve a lubrication effect with adjustable oil volume and high-precision fixed-point lubrication, completely eliminating the risk of ablation of the transmission 100 during the neutral gear coasting test of the whole vehicle.

[0045] Example 2

[0046] This embodiment is similar to Embodiment 1, except that in this embodiment:

[0047] like Figure 3As shown, the oil supply device 1 is an oil pot 13 , and the oil pot is connected to the oil guide pipe 3 .

[0048] In this embodiment, a second filter screen is further provided at the connection point between the oil pot and the oil guide pipe 3 .

[0049] The design principle of the oil supply device 1 is: oil is supplied through an oil pot 13 filled with lubricating oil, and the oil is accurately dripped to the part of the transmission 100 that needs lubrication by the dropper 2. Although the oil pot 13 has a simple structure, it has the lowest cost. However, during a single test cycle of the device, it is necessary to add a proper amount of lubricating oil to the oil pot 13, and it is also necessary to observe the changing liquid level of the lubricating oil in the transmission 100 to avoid excessive oil in the transmission 100. After a single test cycle is completed, it is necessary to clean up the excess gear oil in the transmission 100, such as releasing some of the excess oil through the drain plug at the bottom of the transmission 100 before the next test cycle can be carried out.

[0050] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0051] Example 3

[0052] like Figure 4 As shown, this embodiment provides a transmission forced lubrication upper cover tooling, including a transmission assembly upper cover 101, and also includes the transmission forced lubrication device as described in the above embodiment 1, the transmission assembly upper cover 101 is provided with an oil outlet hole and an oil inlet hole, the oil inlet pipe 11 passes through the oil outlet hole, and the oil guide pipe 3 passes through the oil inlet hole, so the oil inlet pipe 11 and the oil guide pipe 3 are sealed and connected to the transmission assembly upper cover 101.

[0053] The advantage of this embodiment is that although there are many types of transmissions 100, the same type of transmission assembly upper cover 101 can be universal, so this embodiment integrates the transmission forced lubrication device with the transmission assembly upper cover 101. When the same type of vehicle is subjected to a neutral gear coasting test, the transmission assembly upper cover 101 can be directly replaced, and there is no need to drill holes and install the transmission forced lubrication device for each transmission 100 assembly, which can save work time and improve test efficiency.

[0054] Example 4

[0055] This embodiment provides a transmission, including the transmission forced lubrication upper cover tooling as described in the above embodiment 3.

[0056] The advantage of this embodiment is that when splash lubrication is not possible, the transmission 100 of this embodiment can still perform precise forced lubrication on the parts that need lubrication, achieve forced lubrication effect under any test conditions and any test cycle conditions, and completely eliminate the risk of ablation of the transmission 100.

[0057] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A transmission forced lubrication device, characterized in that: The invention comprises an oil supply device (1), an oil dripper (2), an oil guide pipe (3) and an oil quantity control valve (4); the oil guide pipe (3) passes through the housing of a transmission (100) and has two ends respectively connected to the oil supply device (1) and the oil dripper (2); the oil quantity control valve (4) is arranged on the oil guide pipe (3); the oil supply device (1) is located outside the housing of the transmission (100); the oil dripper (2) is installed inside the transmission (100) and the oil dripping direction is toward the part to be lubricated.

2. A transmission forced lubrication device according to claim 1, characterized in that: The oil dripper (2) comprises a dispersion pipe (21) connected to the oil guide pipe (3), and a plurality of drippers (22) respectively connected in parallel to the dispersion pipe (21).

3. A transmission forced lubrication device according to claim 2, characterized in that: The layout positions of the plurality of drippers (22) match the locations inside the transmission (100) that require lubrication.

4. A transmission forced lubrication device according to claim 1, characterized in that: The oil supply device (1) comprises an oil inlet pipe (11) and an oil pump (12); one end of the oil inlet pipe (11) passes through the housing of the transmission (100) and is connected to the lubricating oil layer inside the transmission (100); the other end of the oil inlet pipe (11) is connected to the input end of the oil pump (12); and the output end of the oil pump (12) is connected to the oil guide pipe (3).

5. A transmission forced lubrication device according to claim 4, characterized in that: The oil pump (12) is an electronic oil circulation pump with a built-in drive motor, or an oil circulation pump driven by an external drive motor.

6. A transmission forced lubrication device according to claim 4, characterized in that: The oil inlet pipe (11) is also provided with a first filter screen.

7. A transmission forced lubrication device according to claim 1, characterized in that: The oil supply device (1) is an oil pot (13), and the oil pot is connected to the oil guide pipe (3).

8. A transmission forced lubrication device according to claim 7, characterized in that: A second filter screen is also provided at the connection point between the oil pot and the oil guide pipe (3).

9. A transmission forced lubrication upper cover tool, comprising a transmission assembly upper cover (101), characterized in that: It also includes a transmission forced lubrication device as described in any one of claims 4 to 6, wherein an oil outlet hole and an oil inlet hole are provided on the transmission assembly upper cover (101), the oil inlet pipe (11) passes through the oil outlet hole, and the oil guide pipe (3) passes through the oil inlet hole, so that the oil inlet pipe (11) and the oil guide pipe (3) are sealed and connected to the transmission assembly upper cover (101).

10. A transmission, characterized in that: It includes the transmission forced lubrication upper cover tooling as described in claim 9.

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